Abstract

Single-walled carbon nanotubes on thin plastic substrates have been decorated with Pd nanoparticles through a simple electrochemicaldeposition process and have been used to fabricate high-performance hydrogen sensors with excellent mechanical flexibility. The typical flexible sensors exhibit sensitivity (i.e., the change of resistance) of for 0.05% hydrogen in air and response time of for 1% hydrogen at room temperature. The performance of the as-fabricated devices keeps essentially unchanged even when they are bent to curving profile with bending radius of and after they are operated for of bending/relaxing.

This letter has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science Laboratory, is operated under Contract No. DE-AC02-06CH11357.